Remove old courses

Author: nickbearman

_data/osgeouk_training.csv

@@ -1,7 +1,4 @@
 description,date,organisation,location,link
-Introduction to Spatial Data and R as a GIS, 11-12 Nov 2025, Nick Bearman & Instats, Online, https://nickbearman.github.io/training-courses.html#introduction-to-spatial-data-using-r-as-a-gis
-Advanced R for Spatial Analysis, 25-26 Nov 2025, Nick Bearman & Instats, Online, https://nickbearman.github.io/training-courses.html#advanced-R-as-a-gis-spatial-analysis-and-statistics
-Spatial Statistics in R, 2 Dec 2025, Nick Bearman & Instats, Online, https://nickbearman.github.io/training-courses.html#advanced-R-as-a-gis-spatial-analysis-and-statistics
 Introduction to QGIS & Spatial Data, 24-25 Feb 2026, Nick Bearman & NCRM, Online, https://nickbearman.github.io/training-courses.html#introduction-to-qgis-understanding-and-presenting-spatial-data
 Advanced QGIS: Spatial Analysis, 3-4 Mar 2026, Nick Bearman & NCRM, Online, https://nickbearman.github.io/training-courses.html#advanced-qgis-spatial-analysis
 Introduction to Spatial Data and R as a GIS, 28-29 Apr 2026, Nick Bearman & NCRM, Online, https://nickbearman.github.io/training-courses.html#introduction-to-spatial-data-using-r-as-a-gis